Home / 21,325.75-29,428.20-11,765.75

Finding the Fourth Proportional to 21,325.75, 29,428.20 and 11,765.75

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Solution

The fourth proportional to 21,325.75, 29,428.20 and 11,765.75 is: 16,236.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.75 : 29,428.20 = 11,765.75 : x
  2. Step 2: Convert to fraction form
    21,325.75/29,428.20 = 11,765.75/x
  3. Step 3: Cross multiply
    21,325.75x = 29,428.20 × 11,765.75
  4. Step 4: Simplify right side
    21,325.75x = 346,244,844.15
  5. Step 5: Solve for x
    x = 346,244,844.15/21,325.75
  6. Step 6: Final answer
    x = 16,236.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.